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doc/README: add Build Types section

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Originated from: https://tracker.ceph.com/issues/71360

Signed-off-by: Matan Breizman <mbreizma@redhat.com>
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Matan Breizman 2025-05-20 09:12:18 +00:00
parent d570f85003
commit 1b02531634
1 changed files with 13 additions and 5 deletions
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README.md
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@ -84,10 +84,8 @@ To build Ceph, follow this procedure:
./do_cmake.sh ./do_cmake.sh
``do_cmake.sh`` by default creates a "debug build" of Ceph, which can be See [build types](#build-types).
up to five times slower than a non-debug build. Pass
``-DCMAKE_BUILD_TYPE=RelWithDebInfo`` to ``do_cmake.sh`` to create a
non-debug build.
3. Move into the `build` directory: 3. Move into the `build` directory:
cd build cd build
@ -127,8 +125,18 @@ To build Ceph, follow this procedure:
ninja install ninja install
## Build Types
``do_cmake.sh`` by default creates a "debug build" of Ceph (assuming `.git` exists).
A ``Debug`` build runtime performance may be as little as 20% of that of a non-debug build.
Pass ``-DCMAKE_BUILD_TYPE=RelWithDebInfo`` to ``do_cmake.sh`` to create a
non-debug build.
The default build type is ``RelWithDebInfo`` once `.git` does not exist.
| CMake mode | Debug info | Optimizations | Sanitizers | Checks | Use for |
| ------------------- | ---------- | -------------------|-------------------- | -------------------------| ------------------|
| `Debug` | Yes | `-Og` | None | `ceph_assert`, `assert` | gdb, development |
| `RelWithDebInfo` | Yes | `-O2`, `-DNDEBUG` | None | `ceph_assert` only | production |
### CMake Options ### CMake Options